By-product retort coke-oven.



UNITED. STATES To all whom it may concern:

Be it known that I, HUGH citizen ofthe United States, residing at-Bellevue, in the county of Allegheny and State of Pennsylvania, haveinvented certain new and useful Improvements in By-Product RetortCoke-Ovens, of which vthe following is a specification.

My invention relates to by-product, retort coke ovens, and is animprovement consisting of the construction and arrangement of, ovenssubstantially as herein shown and described and more particularlypointed out in the claims.

It is a common practice in vcoke ovens to employ reenerators adapted topre-heat the air use for combustion purposes by effecting a reversal offlow of air and hot gases therein at intervals.

Now the object of my invention is to provide a sim le form of ovenadapted to preheat the a1r used for combustion' urposes without-areversal of flow and wit out the use of regenerators. With thisendinview, I provide means to utilize the burned gas from each burner or pairof burners and their correspondi set of -oven heating ilues to heat acontinuous inflow of air for that particular burner or pair of burners,In other words, a continuous flow of fresh air for each burner isreheated by the heat generated by the same burner, and independently ofthe other burners of the oven. Each burner thereby receives a directsupply of preheated fresh air all 4of which is con#V ducive to thefbest'combustion and to continuous and uninterrupted operations ofthe oven.In the accompanyin drawings, Fi ure l is a -sectional view o my improvecoke oven centrally through a coking chamber. Fig. 2 is a sectional viewin plan of, several ovens,/.taken on three different horizontal planesrepresented 'by' lines e-z, ftp-Jv. and l:v -w, Fi 3 and'4,respectively. Fi 3 is sections. View ofthe oven on two ilerent lines`A--A and B B, respectively of Fig. 4, showing in' the irst instance thecombustion and oven heating dues, and in the'second, the air -heatingand burned gas flues. Fig. 4 is a sectional view through several ovenson lines y-y and -m, Fig. A 3, and also-shows a front view thereof atthe right.

The oven in its entirety embodies a series Penn Tron, a

speeiacauon of Letters 15a/cent. Application tiled December 17, 1908.

.arranged-in tiers of three at either' si PATENT OFFICE.

Patented Nov. e, 1909.

sera1No.467,933. v L

of coking ovens, or more specifieallyspeaking, aseries of cokingchambers A arranged paittllelly with intervening walls a'extending fromone side yor front to the other.

Openings B in the top of the oven are pro` r e .chambersA .with openingsC arel'also gas into collecting E which conduotp's'it.-

'60 vided as usual to cha the coal to be coked, an provided to conveythe `plpes D and gas main to aq, as cleaning plant or condensin v ltonsforlt e recovery of the by-pl-'dueistnit f shown The clean gas isreturned `throu' distributing pipes F and is used to heat t iues qfpthecoking chamber to coke the coal `l, thereinfl'md to this end burnersGare condy 7oA nectd to pipes F by pipes H: f l AAs shown, there aretwelve burners Gr` to, each oven A, com risin fourfzsets of threeburners each. T us, t ee burnersG are arrangedone above the other ateither side of oven chamber A at both fronts, and each burner G suppliesgas to a corresponding number of combustion chambers I having a heatingflue I which forms a part thereof. Chambers I and I are thereforehorizontallg de o oven chamber .A and extend parallel therewith andlengthwise thereof from both fronts to middle division wall 2.Horizontal .walls 3' separate the respective combustion and heatinorchambers Iv and I from like chambersa ,ove and below and thereby makethem iiildeinendentlyV operative and responsive to their own burners Gand to none of the others.

Communication lbetween main combustion chamberI and heating ilue I is bypassage 4 at middle wall 2 and combustion takesv place lin both ofcourse. Now following the course of the ases from burne` G, the same"9.5 are discharged from flues I aty lhe front endthereofA throu h avalved opening '5 and pass into the ront end ofa passage 6fhori zontallyarranged in the center of Iwallie and parallel to and on the'sameplanewith d and between iiues I' see Fig. 3 and also section w-w, Fig.2. The inner end of passa e 6 opens into vertical flue 7V next 'to mid ewall 2 and the bottom of'this flue comof the entire battery of ovens andconnect with a stack (not showny.- Two ilues R are preferably used, onefor each front of the battery, and dampers 11 are used at the dischargeend of iues 9 to control the heat under the oven loors.

Now it is obvious that combustion can not take place in the severalcombustion chambers unless air is provided in suiicient quantities toproduce this result, and to obtain the best results this air must bepreheated. Therefore, I provide each of the twelve burners G and'theircorresponding combustion chambers with air passages K, K having intakes12, and which passages are located in walls a between combustionchambers I and run parallel therewith from front to rear. A horizontalpartition 13 divides each air passage into two parts K, K respectivelyto provide a circuitous travel of the air. Thus, air is taken in atintakes 12 and passes through passage K to rear wall 2 in the toppassage K of each tier and to the dividing ,wall 14 in the other orlowerpassages K and thence the iow is outward to lateral valved openings15 which communicate with combustion chambers I at a point directlyopposite the mouth of burners G.

' The air in its travel is exposed to the heated walls of bothcombustion chambers I at either side thereof and also'of heating chamberI and becomes heated thereby before its exit into the combustionchamberv where it i mixes with the gas from the pair of burners G ofthat particular set. Then the heat from the burned gases flowing throughmiddle passage 6 also contributes to the heating of the air in passagesK through the intervening Walls which separate them and form theirbottoms and tops, respectively.

Although no valve 1s shown at each intake it is obvious that one may beused to control the inflow ofair, especially if none .be used atopenings 15, the preferred location.

Now in operation, each burner Gr is provided with fresh air whichbecomes preheated by passing through top assage K from the front to thecenter of) the oven battery and thence returning through lower passage Kto the openings 15 through which the. now hea ted air is discharged intocorn bustion chambers I where it is mixed with the from burners G andwhere combustion occurs in flue chambers I and I. The burned gases nowpass to the burned, gas passage 6 and again travel toward the center ofthe oven battery giving up heat to the air in the flues K and K andturning downward at the end through vertical flue 7 and into flue 9beneath the oven door, finally flowing into waste gas ilues R.

The regulation of hating is controlled by suitable dampers 16 a openings5 in chambers I, and the air is regulated by suitable dampers 17 atopenings 15 inai-r passages K, and the gas sup ly is regulated by valves18 at burners G. for lues 9 as hereinbefore described.

In view of the foregoing description, it

obviously apparent that the operation of the ovens is simple and controlof each oven coinplete and independent of the rest in the battery, andthat a uniform heat can be maintained in all the walls at all times, and1f desired, I can place peep openings (not shown) at the ends of eachheating flue or passage for inspection purposes. It will also ampers 11are also usedV be noted that with this form of Oven, I am .there are noreversing operations required norsuchexpenses incident thereto a's withthe use of ovens employing regenerators.

What I claim is '1. A by-product coke oven having a walled cokingchamber and a series of parallelly ar-A ran ed combustion chambers inthe side walIsthereof one above the other and independent of each other,and a as burner for each of said combustion cham ers, and said airpassages adjoining each combustion chamber and opening thereinto at saidburners and comprising two-part forward and return portions extendingthe full length of said combustion chambers, and separate air intakesfor each of said airl assages and their respective combustion c ambersand burners. i 2. Aby-product coke oven having awalled cokng chamberprovided with a series of separate combustion chambers longitudinallyarranged at each side thereof at different elevations and each of saidcombustion chambers having a separate discharge passage for the burnedgases therefrom arranged parallel therewith and at one side thereof, andsaid discharge assages having com-y munication with a ischarge fluebeneath said oven chamber.

3. A byfproductcoke oven havinga walled c oking chamber provided with aseries of separated and independent combustion cham-A bers arrangedlongitudinally thereof and each of said combustion chambers having aircenti thereto substantially the full length therecf and with a returnextension and each side walls also having'a series of separate ilo#intake passages arranged immediately adjaof said `oombustion chambersalso provided with horizontal discharge passages for the burned gasesarranged adjacent'to said air intake passages, and whereby the air forcombustion purposes is preheated.A

4. A by-product coke oven having a series 130 of coking chambers andintervening walls provided with vcombustion chambers at each sidethereof and air intake passages there-for arranged substantially thefull length of and centrally of said walls between said combustionchambers, said walls having horizontal discharge passages for the burnedgases from said combustion chambers located between said air intake.passages the full length thereof, whereby said air passages are exposedat all sides to the heat ilues within said walls.

5. In by-product coke-ovens, a batter of ovens having intervening wallsprovided with a series of separate combustion chambers arranged in pairsat different elevations therein and separate gas burners therefor,

' and each pair of said combustion chambers having a discharge passa efor the burned gases and also a hor1zonta air passage centrall locatedbetween them substantially the ull length thereof, and each of said airpassages having an independent fresh air intake and outlet openings .forits respective combustion chambers, and a discharge flue open to theburned gas passages.

6. In by-product coke ovens, a battery of ovens arranged in parallelrelation with separating walls and separate combustion chambers arrangedin tiers in each wall, and separate burners for each combustion chamber,and said walls having double air vpassages adjacent to said.combustionchambers substantially the full length thereof and also dischargepassages adjacent thereto and to said air passages and paralleltherewith, and waste gas vflues lengthwise of said battery ott ovensaving connecting flue's with all said discharge passages, and dampersfor said respective chambers, flues and passages to reg`-" u ate theflow of the air and gases and heatproducts.

In testimony whereof I aHx my signature in presence of tw'o Witnesses.

HUGH PRENTICE. W'itnesses:

J. S. RoDGERs, JAMES J. CLOONAN.

